modify lower supporting cusps and upper guiding cusps positions & lengths to come into shared guidance contact at the upper bucal cusp to lower buccal cusp position when the casts are held in laterotrusion vs. the standad cone placement to avoid all posterior excursion contact,leaving the canines to provide all the disclusion by canine guidance

in left lateral movement what is the movement of right condyle?

down

forward

medially

non-working side condyle rotates about the vertical and sagittal axes of the working-side condyle in this left lateral jaw movement, AND the arcs of movement of each right side mandibular cusp also rotates about these axes.

Lower supporting cusps on the right side are tracking out foruard and downwards (which is OK) However they are also tracking MEDIALLY and this places them close to being in opposing contact with the lingual part of the upper right molars: and potential occlusal interference

What opposing occlusal surfaces are most likely to come into occlusal contact or occlusal interference in mediotrusion?

in Class I ICP all lower supporting cusps make ____ ICP contacts except for ____

marginal ridge

except lower DB which make central fossa and lower 1st D which make distal fossa contact

Class I ICP, upper supporting cusps make ____ ICP contacts?

fossa

premolars make D fossa

molars make central

excep molar D cusps with make marginal ridge contacts

In class I, how are the L cusps of upper premolars positioned?

slightly mesial to make lower D fossa contact

Class II adjustment

move mandible distal

Class III

How are molar laterotrusion contacts or interferences adjested?

reshaping upper guiding cusp inclines

occlusal interference

any tooth contact that inhibits the

remaining occluding surfaces from achieving stable and harmonious contacts. (In an excursion contact position, anterior guidance would be interrupted by the interference and.transferred to the interfering posterior cusp for disclusion guidance; or be an occlusal contact that interferes with full closure into ICP, or interferes with the closure pathway into ICP'Posterior occlusal interference may encourage recruitment of full closing power of the jaw elevator muscles leading to primary occlusal trauma on the hard and supporting dental tissues' but inonlv a few susceDtible cases to myalgia. Most patients.adapt byalt"ri", th"*f"* position on closure or in the masticatory cycleto avoii an interference in function (e.9. on a new crown)'Avoidance of ICP occlusal interferences may be more difficult than avoiding excursion interferences. Contact patterns during sleep bruxism-may be different. However the notion that occlusal interferences are the etiotogy of bruxism and of TMD, and that TMD should be treated by coronoplasty or other occlusal changes is incorrect,and these are much more complex multifactor disease entities

eccentric occlusal contacts

shared or mutual occlusal contacts (not at ICP) in a contact jaw movement, that do not disclude the anterior guidance or act as apivoting interference or fulcrum. However, more contacts may mean more occlusal attrition. Eccentric occlusal contacts "every way which way" is a goal oF denture

Balannd Occluion

Occlusal harmony

condition in centric and^eccentric jaw relation in which there are no interceptive or deflective contacts of occluding surfaces (and there is a progressive gradual disclusion rather than overly steep or abrupt anterior guidance)